Right, but again, it's he said/she said. The top bodybuilders are doing a gazillion things to their bodies already, and that may be just a glorified sweat box that helps them drop some water. Not saying there's no benefit to that, just that it could be accomplished by simpler, cheaper means.
I've heard the same thing about how it detoxifies and such, but I'm extremely leery of such claims without clinical studies. For instance, as a Licensed Massage Therapist here in FL, I hear the word "toxins" tossed about by my colleagues constantly. Most of them seem to think that massage pushes "toxins" out of muscle tissue and into the blood stream, which it does not. The grain of truth here is that massage can move lymph, which is the toxic sludge stored in your lymph nodes, which are clustered in certain sites around your body. However, if you're not actually targeting the lymph nodes, the amount of "toxins" you move into circulating blood will be incidental and likely very small.
Likewise, I'm thinking that since infrared is basically just heat energy, that one of these gizmos can make you sweat balls, thereby forcing you to drink more water, and somewhat "detoxifying" you by this process. So while one of it's claims is technically not a lie, the claim of how it accomplishes this may well be. So the consumer, instead of just sitting in a room with the AC turned off for an hour, shells out money for "fat burning" treatments from this very scientific-sounding whirly-gig.
Hey, thanks for the input though, man!